Results 21 to 30 of about 7,729 (158)

Hardy-Littlewood-Sobolev inequalities on compact Riemannian manifolds and applications

open access: yes, 2015
In this paper we extend Hardy-Littlewood-Sobolev inequalities on compact Riemannian manifolds for dimension $n\ne 2$. As one application, we solve a generalized Yamabe problem on locally conforamlly flat manifolds via a new designed energy functional and
Han, Yazhou, Zhu, Meijun
core   +1 more source

Singular solutions of fractional order conformal Laplacians

open access: yes, 2011
We investigate the singular sets of solutions of conformally covariant elliptic operators of fractional order with the goal of developing generalizations of some well-known properties of solutions of the singular Yamabe ...
Gonzalez, Maria del Mar   +2 more
core   +1 more source

Generic Properties of Critical Points of the Weyl Tensor

open access: yesAdvanced Nonlinear Studies, 2017
Given (M,g)${(M,g)}$, a smooth compact Riemannian n-manifold, we prove that for a generic Riemannian metric g the critical points of the function š’²g⁢(ξ):=|Weylg⁢(ξ)|g2${\mathcal{W}_{g}(\xi):=\lvert\mathrm{Weyl}_{g}(\xi)\rvert^{2}_{g}}$ with š’²g⁢(ξ)≠0 ...
Micheletti Anna Maria, Pistoia Angela
doaj   +1 more source

The Yamabe problem on Dirichlet spaces [PDF]

open access: yes, 2013
We continue our previous work studying critical exponent semilinear elliptic (and subelliptic) problems which generalize the classical Yamabe problem. In [3] the focus was on metric-measure spaces with an `almost smooth' structure, with stratified spaces
Gilles Carron   +3 more
core  

Fractional Q$Q$‐curvature on the sphere and optimal partitions

open access: yesJournal of the London Mathematical Society, Volume 112, Issue 6, December 2025.
Abstract We study an optimal partition problem on the sphere, where the cost functional is associated with the fractional Q$Q$‐curvature in terms of the conformal fractional Laplacian on the sphere. By leveraging symmetries, we prove the existence of a symmetric minimal partition through a variational approach. A key ingredient in our analysis is a new
HĆ©ctor A. Chang‐Lara   +2 more
wiley   +1 more source

Kodaira Dimension and the Yamabe Problem [PDF]

open access: yes, 1997
The Yamabe invariant Y(M) of a smooth compact manifold is roughly the supremum of the scalar curvatures of unit-volume constant-scalar curvature Riemannian metrics g on M.
LeBrun, Claude
core  

Invariant surface area functionals and singular Yamabe problem in 3-dimensional CR geometry

open access: yes, 2017
We express two CR invariant surface area elements in terms of quantities in pseudohermitian geometry. We deduce the Euler-Lagrange equations of the associated energy functionals. Many solutions are given and discussed.
Cheng, Jih-Hsin   +2 more
core   +1 more source

An Efficient Collocation Method for a Class of Boundary Value Problems Arising in Mathematical Physics and Geometry

open access: yesAbstract and Applied Analysis, 2014
We present a numerical method for a class of boundary value problems on the unit interval which feature a type of power-law nonlinearity. In order to numerically solve this type of nonlinear boundary value problems, we construct a kind of spectral ...
A. H. Bhrawy   +2 more
doaj   +1 more source

On Yamabe type problems on Riemannian manifolds with boundary

open access: yes, 2015
Let $(M,g)$ be a $n-$dimensional compact Riemannian manifold with boundary. We consider the Yamabe type problem \begin{equation} \left\{ \begin{array}{ll} -\Delta_{g}u+au=0 & \text{ on }M \\ \partial_\nu u+\frac{n-2}{2}bu= u^{{n\over n-2}\pm\varepsilon} &
Ghimenti, Marco   +2 more
core   +1 more source

Conformal metrics of constant scalar curvature with unbounded volumes

open access: yesProceedings of the London Mathematical Society, Volume 131, Issue 1, July 2025.
Abstract For n⩾25$n\geqslant 25$, we construct a smooth metric g∼$\tilde{g}$ on the standard n$n$‐dimensional sphere Sn$\mathbb {S}^n$ such that there exists a sequence of smooth metrics {g∼k}k∈N$\lbrace \tilde{g}_k\rbrace _{k\in \mathbb {N}}$ conformal to g∼$\tilde{g}$ where each g∼k$\tilde{g}_k$ has scalar curvature Rg∼k≔1$R_{\tilde{g}_k}\equiv 1 ...
Liuwei Gong, Yanyan Li
wiley   +1 more source

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